Carbureter.



UNITED STATES T 'QFFTCE.

RUDOLF SLABY, 0F STUTTGART, GERMANY, ASSIGNOR T0 DAIMLER-MOTOREN-GESELLSCHAFT, OF UNTERT'ilRKHEIM, GERMANY, A C(JRPORATION OF'GER- MANY.

CABBURETER.

Application filed July 31,

To all whom it may concern:

Be it known that I, RUDoLr SLABY, subject of the King of Prussia,residing at 33 Dienershalde, Stuttgart, Kingdom of lVurttemberg, GermanEmpire, have invented certain new and useful Improvements in Carburetersfor Liquid Fuel, of which the following is a specification.

The present invention. relates'to carbureters for liquid fuel and itsparticular object is a carbureter allowing a thorough dis integrationand atomization of the fuel before it enters the carbureting chamber. Inorder to attain this, instead of introducing the fuel into thecarbureting chamber directly from the fuel noz zle or from any otheraperture at the end of the fuel tube, a cap-shaped chamber is insertedbetween said nozzle or aperture and the carbureting chamber proper, saidcap-shaped chamber communicating with the carbureting chamber throughopenings arranged in its wall. This arrangement causes a gradualreduction of the fuel into the gaseous state to take Place, the fuelalready atomized on entering the cap-shaped chamber being furtheratomized within said chamber by whirling and by passing from saidchamber into the carbureting chamber.

Preferably the cap-shaped chamber should be arranged so as to admit partof the primary air, thus causing the fuel to be mixed with part of theair before entering the carbureting chamber. The apertures connectingthe cap-shaped chamber with the carbu reting chamber are preferablyshaped so as to present the shortest cylindrical walls possible, and toform a keen peripheral edge. This is attained either by forming thecapshaped chamber of thin sheet metal or else by countersinking theapertures. A plurality of cap-shaped chambers may be arranged in series.

In the drawings rorming part of this specification Figures 1 andfl aresectional views illustrating two modifications of a carburetor accordingto the present invention.

In the carbureter shown in Fig. 1 (lie the float chamber, {1 is the fuelnozzle, 0 a multi-stage resistance formed by a number or' singleresistances arranged in series, as shown for instance inmy co-pendingappli cation. Serial No. 42,966, filed July 31, 1915, c is thecarbureting chamber, (2 is the capshaped chamber, d are the apertureslead- Specification of Letters Patent.

Fatented Nov. 16, 1915.

1915. Serial No. 42,968.

ing from said chamber to the car-bursting chamber. The fuel escapingfrom the last resistance does not enter the carbureting chamber directbut passes first of all into the cap-shaped chamber d there to befurther disintegrated by whirling and to pass 7 presenting a keencirculal or other edge (Z The single particles of the fuel andairmixture instead of being guided by the cylindrical walls of theapertures in parallel directions are thereby forced past said keen, edgeand will expand immediately thereafter in the carbureting chamber.

The nozzle provided with a multistage resistance as shown in thedrawings may be 1 replaced by any other suitable nozzle.

I claim 2- 1. In a carbureter, the combination of a earburetingchamber,a fuel nor zle, a hollow member located at-the free end of said nozzleand having its inner surface curved and forming a substantial continumion of the nozzle mouth whereby the-fuel leaving the latter is given awh'iing motion in said hollow member, the latter being provided withspaced radially disposed apertures connecting the interior of saidmember wit said carburcting chamber.

2. Ina carbureter, in combination, a fuel nozzle, a mixing chamber, acap-shaped chamber inserted between said nozzle and said mixing chamberand a plurality of ap ertnres in the wall of the ea'i sha Jed chamberadapted to connect said chamber with the mixing chamber. said aperturesbeing countersunk in the chamber wl.

3. in a carlmrete r, the comaination or a carbureting chamber, a fuelnozzle, a hollo member located at the free end of said nozzle and havingits inner surface curved and forming a substantial continuation of theresale mouth whereby the fuel-leaving the latter is given a whirlingmotion in said 21c and provided with apertures hollow member, the latterbeing provided with spaced radially disposed apertures connecting theinterior of said member with said carbureting chamber, and havingadditional apertures in close proximity to the nozzle'mouth for theadmission of air to said member.

In a carbureter, the combination of a carbureting chamber, a fuelnozzle, a hollow member located at the free end of said nozzle andprovided with apertures connecting the interior of said member with saidcarbib reting chamber, the walls of said apertures diverging toward saidchamber.

5. In a carb'ureter, earbureting chamber, a fuel nozzle, a hollow memberlocated at the free end of said nozconnecting the interior of saidmember with said carbureting chamber, the walls of said aperturesdiverging from a point between the inner the combination of 21' andouter surfaces of said member toward one of said surfaces.

6. In a carbureter, the combination of a carbureting chamber, a fuelnozzle, a hollow member located at the free end of said nozzleandsprovided with apertures connecting the interior of said member withsaid carbureting chamber, the diameter of each aperture being greater atone surface of said member than at the other.

' 7. In a carbureter, the combination or a carbureting chamber, a fuelnozzle, a hollow member located at the free end of said nozale andprovided with apertures connecting the interior of said member with saidcarbureting chamber, the diameter of each aperture being greater at theouter surface of said member than at the inner surface thereof.

In testimony whereof I affix my signature.

RUDOLF SLAB Y.

Washington, D. C.

